Detection rules › Sigma
Potential Vivaldi_elf.DLL Sideloading
Detects potential DLL sideloading of "vivaldi_elf.dll"
MITRE ATT&CK coverage
| Tactic | Techniques |
|---|---|
| Execution | |
| Stealth |
Telemetry coverage
| Provider | Record / event type |
|---|---|
| Sysmon | Event ID 7: Image loaded |
Rule body
title: Potential Vivaldi_elf.DLL Sideloading
id: 2092cacb-d77b-4f98-ab0d-32b32f99a054
status: test
description: Detects potential DLL sideloading of "vivaldi_elf.dll"
references:
- https://research.checkpoint.com/2023/beyond-the-horizon-traveling-the-world-on-camaro-dragons-usb-flash-drives/
author: X__Junior (Nextron Systems)
date: 2023-08-03
tags:
- attack.persistence
- attack.privilege-escalation
- attack.execution
- attack.stealth
- attack.t1574.001
logsource:
category: image_load
product: windows
detection:
selection:
ImageLoaded|endswith: '\vivaldi_elf.dll'
filter_main_legit_path:
Image|endswith: '\Vivaldi\Application\vivaldi.exe'
ImageLoaded|contains: '\Vivaldi\Application\'
condition: selection and not 1 of filter_main_*
falsepositives:
- Unknown
level: medium
Stages and Predicates
Stage 0: condition
selection and not 1 of filter_main_*Stage 1: selection
selection:
ImageLoaded|endswith: '\vivaldi_elf.dll'
Stage 2: not filter_main_legit_path
filter_main_legit_path:
Image|endswith: '\Vivaldi\Application\vivaldi.exe'
ImageLoaded|contains: '\Vivaldi\Application\'
Exclusions
The rule actively suppresses these predicates.
| Field | Kind | Excluded values | Search |
|---|---|---|---|
Image | ends_with | \Vivaldi\Application\vivaldi.exe | excludes:Image field:"Image" value:"\Vivaldi\Application\vivaldi.exe" |
ImageLoaded | match | \Vivaldi\Application\ | excludes:ImageLoaded field:"ImageLoaded" value:"\Vivaldi\Application\" |
Indicators
These rows show field, operator, and value matches.
| Field | Kind | Values | Search |
|---|---|---|---|
ImageLoaded | ends_with |
| field:"ImageLoaded" kind:ends_with value:"\vivaldi_elf.dll" |